update PEAR to 1.9.4

1 files changed, 483 insertions, 0 deletions

diff --git a/3rdparty/PEAR/REST.php b/3rdparty/PEAR/REST.php
new file mode 100644
index 00000000000..34a804f2bde
--- /dev/null
+++ b/3rdparty/PEAR/REST.php
@@ -0,0 +1,483 @@
+<?php
+/**
+ * PEAR_REST
+ *
+ * PHP versions 4 and 5
+ *
+ * @category   pear
+ * @package    PEAR
+ * @author     Greg Beaver <cellog@php.net>
+ * @copyright  1997-2009 The Authors
+ * @license    http://opensource.org/licenses/bsd-license.php New BSD License
+ * @version    CVS: $Id: REST.php 313023 2011-07-06 19:17:11Z dufuz $
+ * @link       http://pear.php.net/package/PEAR
+ * @since      File available since Release 1.4.0a1
+ */
+
+/**
+ * For downloading xml files
+ */
+require_once 'PEAR.php';
+require_once 'PEAR/XMLParser.php';
+
+/**
+ * Intelligently retrieve data, following hyperlinks if necessary, and re-directing
+ * as well
+ * @category   pear
+ * @package    PEAR
+ * @author     Greg Beaver <cellog@php.net>
+ * @copyright  1997-2009 The Authors
+ * @license    http://opensource.org/licenses/bsd-license.php New BSD License
+ * @version    Release: 1.9.4
+ * @link       http://pear.php.net/package/PEAR
+ * @since      Class available since Release 1.4.0a1
+ */
+class PEAR_REST
+{
+    var $config;
+    var $_options;
+
+    function PEAR_REST(&$config, $options = array())
+    {
+        $this->config   = &$config;
+        $this->_options = $options;
+    }
+
+    /**
+     * Retrieve REST data, but always retrieve the local cache if it is available.
+     *
+     * This is useful for elements that should never change, such as information on a particular
+     * release
+     * @param string full URL to this resource
+     * @param array|false contents of the accept-encoding header
+     * @param boolean     if true, xml will be returned as a string, otherwise, xml will be
+     *                    parsed using PEAR_XMLParser
+     * @return string|array
+     */
+    function retrieveCacheFirst($url, $accept = false, $forcestring = false, $channel = false)
+    {
+        $cachefile = $this->config->get('cache_dir') . DIRECTORY_SEPARATOR .
+            md5($url) . 'rest.cachefile';
+
+        if (file_exists($cachefile)) {
+            return unserialize(implode('', file($cachefile)));
+        }
+
+        return $this->retrieveData($url, $accept, $forcestring, $channel);
+    }
+
+    /**
+     * Retrieve a remote REST resource
+     * @param string full URL to this resource
+     * @param array|false contents of the accept-encoding header
+     * @param boolean     if true, xml will be returned as a string, otherwise, xml will be
+     *                    parsed using PEAR_XMLParser
+     * @return string|array
+     */
+    function retrieveData($url, $accept = false, $forcestring = false, $channel = false)
+    {
+        $cacheId = $this->getCacheId($url);
+        if ($ret = $this->useLocalCache($url, $cacheId)) {
+            return $ret;
+        }
+
+        $file = $trieddownload = false;
+        if (!isset($this->_options['offline'])) {
+            $trieddownload = true;
+            $file = $this->downloadHttp($url, $cacheId ? $cacheId['lastChange'] : false, $accept, $channel);
+        }
+
+        if (PEAR::isError($file)) {
+            if ($file->getCode() !== -9276) {
+                return $file;
+            }
+
+            $trieddownload = false;
+            $file = false; // use local copy if available on socket connect error
+        }
+
+        if (!$file) {
+            $ret = $this->getCache($url);
+            if (!PEAR::isError($ret) && $trieddownload) {
+                // reset the age of the cache if the server says it was unmodified
+                $result = $this->saveCache($url, $ret, null, true, $cacheId);
+                if (PEAR::isError($result)) {
+                    return PEAR::raiseError($result->getMessage());
+                }
+            }
+
+            return $ret;
+        }
+
+        if (is_array($file)) {
+            $headers      = $file[2];
+            $lastmodified = $file[1];
+            $content      = $file[0];
+        } else {
+            $headers      = array();
+            $lastmodified = false;
+            $content      = $file;
+        }
+
+        if ($forcestring) {
+            $result = $this->saveCache($url, $content, $lastmodified, false, $cacheId);
+            if (PEAR::isError($result)) {
+                return PEAR::raiseError($result->getMessage());
+            }
+
+            return $content;
+        }
+
+        if (isset($headers['content-type'])) {
+            switch ($headers['content-type']) {
+                case 'text/xml' :
+                case 'application/xml' :
+                case 'text/plain' :
+                    if ($headers['content-type'] === 'text/plain') {
+                        $check = substr($content, 0, 5);
+                        if ($check !== '<?xml') {
+                            break;
+                        }
+                    }
+
+                    $parser = new PEAR_XMLParser;
+                    PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
+                    $err = $parser->parse($content);
+                    PEAR::popErrorHandling();
+                    if (PEAR::isError($err)) {
+                        return PEAR::raiseError('Invalid xml downloaded from "' . $url . '": ' .
+                            $err->getMessage());
+                    }
+                    $content = $parser->getData();
+                case 'text/html' :
+                default :
+                    // use it as a string
+            }
+        } else {
+            // assume XML
+            $parser = new PEAR_XMLParser;
+            $parser->parse($content);
+            $content = $parser->getData();
+        }
+
+        $result = $this->saveCache($url, $content, $lastmodified, false, $cacheId);
+        if (PEAR::isError($result)) {
+            return PEAR::raiseError($result->getMessage());
+        }
+
+        return $content;
+    }
+
+    function useLocalCache($url, $cacheid = null)
+    {
+        if ($cacheid === null) {
+            $cacheidfile = $this->config->get('cache_dir') . DIRECTORY_SEPARATOR .
+                md5($url) . 'rest.cacheid';
+            if (!file_exists($cacheidfile)) {
+                return false;
+            }
+
+            $cacheid = unserialize(implode('', file($cacheidfile)));
+        }
+
+        $cachettl = $this->config->get('cache_ttl');
+        // If cache is newer than $cachettl seconds, we use the cache!
+        if (time() - $cacheid['age'] < $cachettl) {
+            return $this->getCache($url);
+        }
+
+        return false;
+    }
+
+    function getCacheId($url)
+    {
+        $cacheidfile = $this->config->get('cache_dir') . DIRECTORY_SEPARATOR .
+            md5($url) . 'rest.cacheid';
+
+        if (!file_exists($cacheidfile)) {
+            return false;
+        }
+
+        $ret = unserialize(implode('', file($cacheidfile)));
+        return $ret;
+    }
+
+    function getCache($url)
+    {
+        $cachefile = $this->config->get('cache_dir') . DIRECTORY_SEPARATOR .
+            md5($url) . 'rest.cachefile';
+
+        if (!file_exists($cachefile)) {
+            return PEAR::raiseError('No cached content available for "' . $url . '"');
+        }
+
+        return unserialize(implode('', file($cachefile)));
+    }
+
+    /**
+     * @param string full URL to REST resource
+     * @param string original contents of the REST resource
+     * @param array  HTTP Last-Modified and ETag headers
+     * @param bool   if true, then the cache id file should be regenerated to
+     *               trigger a new time-to-live value
+     */
+    function saveCache($url, $contents, $lastmodified, $nochange = false, $cacheid = null)
+    {
+        $cache_dir   = $this->config->get('cache_dir');
+        $d           = $cache_dir . DIRECTORY_SEPARATOR . md5($url);
+        $cacheidfile = $d . 'rest.cacheid';
+        $cachefile   = $d . 'rest.cachefile';
+
+        if (!is_dir($cache_dir)) {
+            if (System::mkdir(array('-p', $cache_dir)) === false) {
+              return PEAR::raiseError("The value of config option cache_dir ($cache_dir) is not a directory and attempts to create the directory failed.");
+            }
+        }
+
+        if ($cacheid === null && $nochange) {
+            $cacheid = unserialize(implode('', file($cacheidfile)));
+        }
+
+        $idData = serialize(array(
+            'age'        => time(),
+            'lastChange' => ($nochange ? $cacheid['lastChange'] : $lastmodified),
+        ));
+
+        $result = $this->saveCacheFile($cacheidfile, $idData);
+        if (PEAR::isError($result)) {
+            return $result;
+        } elseif ($nochange) {
+            return true;
+        }
+
+        $result = $this->saveCacheFile($cachefile, serialize($contents));
+        if (PEAR::isError($result)) {
+            if (file_exists($cacheidfile)) {
+              @unlink($cacheidfile);
+            }
+
+            return $result;
+        }
+
+        return true;
+    }
+
+    function saveCacheFile($file, $contents)
+    {
+        $len = strlen($contents);
+
+        $cachefile_fp = @fopen($file, 'xb'); // x is the O_CREAT|O_EXCL mode
+        if ($cachefile_fp !== false) { // create file
+            if (fwrite($cachefile_fp, $contents, $len) < $len) {
+                fclose($cachefile_fp);
+                return PEAR::raiseError("Could not write $file.");
+            }
+        } else { // update file
+            $cachefile_lstat = lstat($file);
+            $cachefile_fp = @fopen($file, 'wb');
+            if (!$cachefile_fp) {
+                return PEAR::raiseError("Could not open $file for writing.");
+            }
+
+            $cachefile_fstat = fstat($cachefile_fp);
+            if (
+              $cachefile_lstat['mode'] == $cachefile_fstat['mode'] &&
+              $cachefile_lstat['ino']  == $cachefile_fstat['ino'] &&
+              $cachefile_lstat['dev']  == $cachefile_fstat['dev'] &&
+              $cachefile_fstat['nlink'] === 1
+            ) {
+                if (fwrite($cachefile_fp, $contents, $len) < $len) {
+                    fclose($cachefile_fp);
+                    return PEAR::raiseError("Could not write $file.");
+                }
+            } else {
+                fclose($cachefile_fp);
+                $link = function_exists('readlink') ? readlink($file) : $file;
+                return PEAR::raiseError('SECURITY ERROR: Will not write to ' . $file . ' as it is symlinked to ' . $link . ' - Possible symlink attack');
+            }
+        }
+
+        fclose($cachefile_fp);
+        return true;
+    }
+
+    /**
+     * Efficiently Download a file through HTTP.  Returns downloaded file as a string in-memory
+     * This is best used for small files
+     *
+     * If an HTTP proxy has been configured (http_proxy PEAR_Config
+     * setting), the proxy will be used.
+     *
+     * @param string  $url       the URL to download
+     * @param string  $save_dir  directory to save file in
+     * @param false|string|array $lastmodified header values to check against for caching
+     *                           use false to return the header values from this download
+     * @param false|array $accept Accept headers to send
+     * @return string|array  Returns the contents of the downloaded file or a PEAR
+     *                       error on failure.  If the error is caused by
+     *                       socket-related errors, the error object will
+     *                       have the fsockopen error code available through
+     *                       getCode().  If caching is requested, then return the header
+     *                       values.
+     *
+     * @access public
+     */
+    function downloadHttp($url, $lastmodified = null, $accept = false, $channel = false)
+    {
+        static $redirect = 0;
+        // always reset , so we are clean case of error
+        $wasredirect = $redirect;
+        $redirect = 0;
+
+        $info = parse_url($url);
+        if (!isset($info['scheme']) || !in_array($info['scheme'], array('http', 'https'))) {
+            return PEAR::raiseError('Cannot download non-http URL "' . $url . '"');
+        }
+
+        if (!isset($info['host'])) {
+            return PEAR::raiseError('Cannot download from non-URL "' . $url . '"');
+        }
+
+        $host   = isset($info['host']) ? $info['host'] : null;
+        $port   = isset($info['port']) ? $info['port'] : null;
+        $path   = isset($info['path']) ? $info['path'] : null;
+        $schema = (isset($info['scheme']) && $info['scheme'] == 'https') ? 'https' : 'http';
+
+        $proxy_host = $proxy_port = $proxy_user = $proxy_pass = '';
+        if ($this->config->get('http_proxy')&&
+              $proxy = parse_url($this->config->get('http_proxy'))
+        ) {
+            $proxy_host = isset($proxy['host']) ? $proxy['host'] : null;
+            if ($schema === 'https') {
+                $proxy_host = 'ssl://' . $proxy_host;
+            }
+
+            $proxy_port   = isset($proxy['port']) ? $proxy['port'] : 8080;
+            $proxy_user   = isset($proxy['user']) ? urldecode($proxy['user']) : null;
+            $proxy_pass   = isset($proxy['pass']) ? urldecode($proxy['pass']) : null;
+            $proxy_schema = (isset($proxy['scheme']) && $proxy['scheme'] == 'https') ? 'https' : 'http';
+        }
+
+        if (empty($port)) {
+            $port = (isset($info['scheme']) && $info['scheme'] == 'https')  ? 443 : 80;
+        }
+
+        if (isset($proxy['host'])) {
+            $request = "GET $url HTTP/1.1\r\n";
+        } else {
+            $request = "GET $path HTTP/1.1\r\n";
+        }
+
+        $request .= "Host: $host\r\n";
+        $ifmodifiedsince = '';
+        if (is_array($lastmodified)) {
+            if (isset($lastmodified['Last-Modified'])) {
+                $ifmodifiedsince = 'If-Modified-Since: ' . $lastmodified['Last-Modified'] . "\r\n";
+            }
+
+            if (isset($lastmodified['ETag'])) {
+                $ifmodifiedsince .= "If-None-Match: $lastmodified[ETag]\r\n";
+            }
+        } else {
+            $ifmodifiedsince = ($lastmodified ? "If-Modified-Since: $lastmodified\r\n" : '');
+        }
+
+        $request .= $ifmodifiedsince .
+            "User-Agent: PEAR/1.9.4/PHP/" . PHP_VERSION . "\r\n";
+
+        $username = $this->config->get('username', null, $channel);
+        $password = $this->config->get('password', null, $channel);
+
+        if ($username && $password) {
+            $tmp = base64_encode("$username:$password");
+            $request .= "Authorization: Basic $tmp\r\n";
+        }
+
+        if ($proxy_host != '' && $proxy_user != '') {
+            $request .= 'Proxy-Authorization: Basic ' .
+                base64_encode($proxy_user . ':' . $proxy_pass) . "\r\n";
+        }
+
+        if ($accept) {
+            $request .= 'Accept: ' . implode(', ', $accept) . "\r\n";
+        }
+
+        $request .= "Accept-Encoding:\r\n";
+        $request .= "Connection: close\r\n";
+        $request .= "\r\n";
+
+        if ($proxy_host != '') {
+            $fp = @fsockopen($proxy_host, $proxy_port, $errno, $errstr, 15);
+            if (!$fp) {
+                return PEAR::raiseError("Connection to `$proxy_host:$proxy_port' failed: $errstr", -9276);
+            }
+        } else {
+            if ($schema === 'https') {
+                $host = 'ssl://' . $host;
+            }
+
+            $fp = @fsockopen($host, $port, $errno, $errstr);
+            if (!$fp) {
+                return PEAR::raiseError("Connection to `$host:$port' failed: $errstr", $errno);
+            }
+        }
+
+        fwrite($fp, $request);
+
+        $headers = array();
+        $reply   = 0;
+        while ($line = trim(fgets($fp, 1024))) {
+            if (preg_match('/^([^:]+):\s+(.*)\s*\\z/', $line, $matches)) {
+                $headers[strtolower($matches[1])] = trim($matches[2]);
+            } elseif (preg_match('|^HTTP/1.[01] ([0-9]{3}) |', $line, $matches)) {
+                $reply = (int)$matches[1];
+                if ($reply == 304 && ($lastmodified || ($lastmodified === false))) {
+                    return false;
+                }
+
+                if (!in_array($reply, array(200, 301, 302, 303, 305, 307))) {
+                    return PEAR::raiseError("File $schema://$host:$port$path not valid (received: $line)");
+                }
+            }
+        }
+
+        if ($reply != 200) {
+            if (!isset($headers['location'])) {
+                return PEAR::raiseError("File $schema://$host:$port$path not valid (redirected but no location)");
+            }
+
+            if ($wasredirect > 4) {
+                return PEAR::raiseError("File $schema://$host:$port$path not valid (redirection looped more than 5 times)");
+            }
+
+            $redirect = $wasredirect + 1;
+            return $this->downloadHttp($headers['location'], $lastmodified, $accept, $channel);
+        }
+
+        $length = isset($headers['content-length']) ? $headers['content-length'] : -1;
+
+        $data = '';
+        while ($chunk = @fread($fp, 8192)) {
+            $data .= $chunk;
+        }
+        fclose($fp);
+
+        if ($lastmodified === false || $lastmodified) {
+            if (isset($headers['etag'])) {
+                $lastmodified = array('ETag' => $headers['etag']);
+            }
+
+            if (isset($headers['last-modified'])) {
+                if (is_array($lastmodified)) {
+                    $lastmodified['Last-Modified'] = $headers['last-modified'];
+                } else {
+                    $lastmodified = $headers['last-modified'];
+                }
+            }
+
+            return array($data, $lastmodified, $headers);
+        }
+
+        return $data;
+    }
+}
\ No newline at end of file